A water control and sand control integrated material for low-temperature oil well has been developed based on the concepts of artificial wellbore,neutral wetting,and flow regulator to address the mutual influence between sand production and high water content in weakly cemented formations.Laboratory studies have shown that the water and sand control material maintains a compressive strength of 4-7 MPa for the consolidated body within the temperature range of 30-80℃.The con-tact angle of clean water on its surface is 86°,and the oil phase permeability reaches over 4-5 μm2,while the water phase permeability is only 1-2 μm2.On site application of this water and sand con-trol integrated material was carried out 6 times,with a 100％success rate of the process.On the premise of not affecting oil production,the water content of the oil well produced fluid is reduced by 5％to 13.1％,and the water control and sand control cycle reaches more than 200 days,with a good integrated effect of water control and sand control.
关键词
油井出砂/高含水/控水防砂一体化/抗压强度/渗透率
Key words
water control/sand control integrated material/low-temperature oil well
维普
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